Breaking capacity — what those voltage-specific ratings mean
This MCCB delivers 121 kA at 240 VAC, 75.6 kA at 415 VAC, 52.5 kA at 440 VAC, and 11.9 kA at both 500 VAC and 690 VAC. On a 480 V panel with 65 kA available fault current, this breaker has headroom.
Thermal derating — real-world current capability
Above that, it starts to step down: 38.4 A at 55 °C, 37.6 A at 60 °C, 36.8 A at 65 °C, and 36 A at 70 °C. Still enough for a 40 A feeder if the load is continuous at 32 A or so, but worth factoring into the wire sizing and the load schedule.
What's on the van — integration notes
The shunt trip (STL) release allows remote tripping via an external signal. The TM210 release is thermal-magnetic with no electronic adjustment. The 70 mm depth fits standard enclosures.